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stage of photosynthesis that does not require light energy to occur.
the dramatic increase in the human population growth rate over the past two centuries.
cartilage with few collagen fibres and no elastin fibres. It reduces friction in joints,...
an infection of the skin, caused by a parasitic mould. It causes small, red itchy circles on the...
process by which cells become specialised to perform a specific function.
to change over a period of time in response to new environmental conditions.